Self-oiling bearing



June 12, 1928. l1,673,700

K. o. NlLssoN I SELF OILING BEARING Filed May 16, 1927 2 Sk'xeets-SheeI l June 12,1928. 1,673,700

, l K. O. NILSSON SELF OILING BEARING Filed may 1e, 1927 2 sheets-sheet 2 FPQ'Z Fpg? M L 3f 35 36' 41 4s aus l g 87 i u -YN M l v \\\\X 3311 i z i "34g j" la a mi? Patented June 12, 1928.

UNITED STA KARIN O. NILSSON, OF ALTON, ILLINOIS.

SELF-OILING BEARING.

Application filed May 16, 1927. Serial No. 191,872.

The present invention relates toy bearings and more particularly to that type known as sel't'-oiling or lubricating and wherein the operation ol? the bearing spreads or distributes the oil over the bearing surfaces.

An object ot the present invention is to provide a self-lubricating bearing of this type which is of such construction that it may be used in practically all instances where bushings or the like are employed, the hearing of this invention heilig capable of use wherever a socket or hole niav be bored and a bushing fitted therein.

,.'inother object of the invention is to provide a seltlubricating bearing wherein the bore or opening may be concentric with the shaft and bearing surfaces, and wherein the hearing may be used either as a stationary or a rotating` member.

A further object of' the invention is to provide a structure of self lubricating bearing which adapts itself to various modifications in the bushing and shell parts for accommodating the bearing to different uses f and in different positions to adapt the bearing to practically universal use.

The invention also aims to provide a structure which embodies a feed or elevating ring having inner and outer contact faces adapted to bear against the rotary parts for-operating the ring and wherein wear between the ring and the parts is taken up by both the interior and exterior surfaces of the ring and the latter is more positively driven as the wear takes place.

lVith the foregoing and other objects in view, the invention will be more fully described hereinafter, and will be more partie' ularly pointed outv in the claims appended hereto.

In the drawings, wherein like symbols refer to like or corresponding parts thronghout the several views,

Figure 1 is a longitudinal vertical section taken through a self-lubricating bearing constructed according to this invention;

Figure 2 is a transverse section taken through the same on the line 2-2 of Figure l;

Figure 3 is a horizontal section'taken on the line 3 3 of Figure 1;

Figure 4 is a vertical section similar to Figure 1 but showing a slight modification in the structure;

Figure 5 is a transverse section taken on the line 5 5 of Figure 4;

Figure G is a. viewv similar to Figure 4 but showing a shaft and feed ringV carried thereby, the ring being of modified construction;

Figure 7 isa fragmentary vertical section through the upper part of another modified form of the bearing, showing the bushing in separate parts secured together by the shell;

Figure 8 is another modification of the bushing and shell structure;

t Figure 9 is a further modification showing a one-piece bushing with the shell' swaged at its ends upon the bushing;

Figure 10 is a like view with the shell threaded to the bushing;

Figure 11 is a view similar to Figure 8 but with the partition ribs carried by the d shell instead of by the bushing;

Figure 12 is a like view with the ends 01 the bushing flanged to hold the shell thereon;

Figure 13 is another fragmentary view of the bearing with the partitions carried by the bushing and the shell and overlapping one another; and

Figure 14 is a like view of a still further modification of the bearing wherein the parf titions are carried artly by the bushing and partly by the shelf;

Figure 15 is a longitudinal section taken through another modified form of the inven-l tion; and

Figure 16 is a similar view of a further modified form.

Referring to the drawings, and first to the form disclosed in `Figures 1, 2 and 3, 10 and 11 designate a pair of bushing sections or collars adapted to be positioned on a shaft rotatable in the bushing sections. The bushings sections are interfitted at their inner adjacent ends by a .stepped or rabbet joint 12 which not only maintains thebushing sections 10 and 11 in axial alignment with eac-h other but also seals the joint between `the sections. The bushing sections 10 and 11 are provided upon their outer surfaces with annular partitions 13 which are spaced apart lengthwise of the bushing sections to provide annular chambers 14 therebetween adapted to receive a lubricant. The part-if tions 13 at their lower portionsy are provided with notches or recesses 15 forming passages for intercommunicating `the annular compartments 14 with one another. The opposite outer ends ot the sections 10 and 11 are provided with outstanding flanges 16,

which provide end walls for the end Chamrounds the bushing sectionsy and lllfor.

closing the outer sides of the chambers 14.

The opposite ends oi' the shell 18set` in the.,

rabbets 17 and thus seal the shell about the bushing. r1`lie inner ends "of" the yloi'ishing sections vltlwand 1l project slightly beyond the adjacent partitions 13 and are brought intoia'butting relationto provide "an aniiulai centlialfspace 19 itorniing a' Chamber or runii'ay jor al-teeding ring 2U. r[he uppcrfsides ofthe bushing'section's 10 and 11 areprovidediiwith recesses 21` which open entirely thfrough thetops ol the bushings 1()l and 11 and Whicharelocated between the partitions 13 and coniuiuiii -ate the ring space 19 With the inner-side oi'y the bushings 1U and 11. flhe'bushiiigs 1() and 1l are provided on the inner surfaces with diagonally and'spirall y eztinding slots which lead downwi'irdly in one side o1E the bushing 'l'froin the recesses 21:-;o" thatl oil entering the recesses 2l will be caught in thefslots 22 and carried downwardly and leuglhwisefoli the bushing sectionsjll()y ajiid'llqto spread or distribute the oilover 'a" considerable surface are-.rol1 a shaft iiiounted in the bushing, l

- The lfeedingy ring Etlisof a diameter .such thatthe'iniier*faceol' the lring rests upon the uppersidev oi a shalt and, as the shaft revolves, the ring 2() rollsl withits inner side iirs'iirtaceicontact'with the shaft, so' as to roll the ring -in its si'ispended position troni the .sl'ial'tlfhe lower part ol the hearing is adapted to i'eceii'efa bodyfot `lubricant 23 :is shown in'Fignie E2: 'llhering 20 dips into this body ot' lubricant 23 and as' the ring' revplves it. raises a ilni ol theluhric'aiit in si'irae contact with the inner and outer faces and' opposite edges ot'ltlie ring and by virtue of the contact ol the ring 2() with the slialtfth'e lilni fot' oil` transferred to 'the shaft andvat tli'e ysaine tin'ie Tthe excess oil fronttliejshaltis `inverted into the slots' anddistributed lengthwise*throughout the bushing sections 10 and 11.

= The shell 18 niaybeiprovided at an intere. niediate point Vanduin its` upper side with au" opening 2st thi-'oi'igli which lubricant i'iiay be introduced to thechanibers `lll in the hushing, and throughwhich `air may-'freely pas: to II'Jrevent suctionv incident to the eo'nsunip-- tion andA 'outflow of =oil frorn'the bushing see-f tions 10and11. Y A f 'f The t'orni of the rinvention shownin Figurs4 and 5 discloses' a pair of bushing lsections 25 and 26 siiiiilar'iiiconstruction to the setio'i'is'llO and'll-b'ut withf'th'e rabbeted portions -121rein`oved sothat the bushing'sfctior'is QAa'ndjQG tei'ininate sii'listantially in tilieiplanes-ot theirinner adjacent partitions `135l p The end Walls or flanges 1G ot the hushlng sections' engage the opposite ends of the shelllS and consequently maintain a ring chaniber 27-between the inner ends of the .bushing sections tor accoinn'iodatiiig a feedingl ring 28. The ring 28 is of such dianieter that when vthe ring bears at its inner surface upon they upper part ot a shatt passing through the bushing sections 25 and 2G, the exterior orouter surfaces ot the ring 28 bears against the inner bottoni portion ot the shell 13. ln this iiianner the iing :3 inay be driven 'from two sources although the shell 1S drives the ring at a relatively great speed so that the upper part ol the, ring will have a sliding or slipping action oicr the top of the? sha'iit with the result that the end ilin ot oil which is lifted by the ring 28 will-be removed and deflected backwardly through the-space between the bushings` 25 and 26and into the slots 22. ln rthis iustance,y ythe vent and tiller opening E21) niay be provided in the shell 18 near one end thereot.

ln the nioditication shown in Figure (3 a shaft 3U is disclosed in position in the bushing sections 25 and 26 and a structure similar to that shown in Figures -1 and 5 with the exception that the ring chaniber or space 3l niay be slightly wider than the space 2T to accommodate a ring32 which is of undulating or lateral offset torination as shown. This type of ring is adapted to present an increasedsurface area for the lilin o t oil so that a larger aniount of oil niay be raised and distributed as conipared with the plane ring of `Figure 4. The structure is otherwise identical.

The structures disclosed in Figures 4, 5 and (5 are inore peculiarly adapted to that typeoi bearing wherein the bushing with its pa rts are located upon a relatively stationary shaft."y The structure slio'wnin Figures 1, 2 andrei/lois of the type vwherein the bushing is maintained stationary while the shaft turns in the bushing. and the downwardly dii'erging slots or' grooves 22'are shown in Figure 3 as being duplicated in the opposite sides of the bushing.

'The modified vorinshown in Figure 7 enibodies sections 33 and 34 having spaced partitions to provide oil chambers 36 in the outei' sides ot the bushing sections and which hai'e extended and abutting portions 37 be,- yond the inneradjacent partitions to maintain the saine in spaced relation and providing aV ring chamber 38 in which is placed a ring 39. 'Ifhe abutting portions 37 are eut away at the top of the lnishing to provide a recess or opening tliereat so that the ring'39 may engage directly upon ay shaft when the bushing is mounted on the shaft. 'lheshell 40 is Seated upon the peripheral edges of the partitions 35 and has outwardly facing shoulders 41 at its inner side and nearl its opposite ends, the shoulders 41 being adapted to seat against the inner edges of.

lll)

the partitions for maintaining the bushing sections in spaced relation and to hold the shell in position for closing the oil. chambers 36.

The form shown in Figure 8 is similar to that of Figure 7 with the exception that the bushing section 34 only has an abutting eX- tension 42 which engages the end of the other section 33 to provide the ring space 38. In this instance. the shell 40 is provided with shoulders 43 arranged near thevcentral portion of the shell and adapted to abut against the inner opposite surfaces of the partitions 35 at the ring space to maintain the space open and hold the shell from displacement.

In Figure 9 the bushing 44 is in one piece throughout its length with a recess 45 cut in its top between the spaced metal partitions to accommodate the ring 46. In this instance, the ring 46 is made with a cross-cut and welded after being positioned in the ring' space 38. The shell 47 is held in place on the partitions 35 by swaging or turning down the opposite ends of the shell to provide 'flanges48 lapping against the outer surface of the outermost partitions to hold the shell 47 from longitudinal dis placement on the bushing.

In Figure 10 the shell 49 is shrunk upon the peripheral edges of the partitions 35 of the integral bushing 44, and in other respects the structure is-similar to that shown in Figure 9.

Figure 11 shows the bushing comprising a pair of sections 50 and 51 with an abutting portion 52 carried by the section 51 to space the sections apart and provide a ring groove or space 53. A shell 54 is arranged concentrically about the bushing and carries the partitions 55 which extend inwardly and provide therebetween the oil chambers 56. The inner edges of the partitions 55 bear against the bushing sections 50 and 51 to close the oil chambers 56, the inner partitions 57 may be of increased depth to seat a shouldered recess 58 formed in the inner adjacent ends of the bushing sections 50 and 51 to hold the shell 54 and the bushing from longitudinal relative movements.

Figure 12 shows a modification of Figure 11 wherein the partitions 55 are of unequal depth but wherein the bushing sections 58 and 59 have outturned flanges 60 at their outer ends for engagement with the outer sides of the end partitions 55 to hold the shell and the bushing from shifting longitudinally of each other.

The form of invention shown in Figure 13 embodies combined structure wherein the bushing section 61 has outstanding partitions 62 thereon forming an oil chamber 63. The bushing sections 67 has smooth peripheral surfaces and an extension 68 at its inner end recessed at 69 and adapted to abut against the section 61 to provide Qa ring space 7() in which is fitted a ring 71 the shell 72 has a smooth inner surface 73 adapted to abut the partitions 66 while the outer end of the shell 72 has partitions 74 which extend inwardly and abut the smooth surface of thebushing section 67. The partitions 74 provide an oil. chamber 75 in the shell 72.

The types of bearings shown in Figures 7 to 13 inclusive are particularly adapted to stationary bushings, and the modification shown in Figure 14 is more particularly adapted to a rotating bushing wherein the bushing 76 is in one piece recessed at its top and intermediate its ends as at 77 to accommodate a split welded ring 78 for contact with a shaft, the shell 79 carrying aseries of consecutively shortened partitions 8() and 81 adapted to engage the peripheral surface' of the bushing 86 at opposite sides of the ring 78. The outermost short partition 81 is rabbeted or shouldered as at 82 to interlock with an outstanding bead y83 carried upon the adjacent end of the bushing 76 for holdingthe bushing and shell in proper relation and :.u'lmitting of the introduction of the bushing into the shell from one end.

In Figure 15 a bushing 84 surrounds the shaft 85 and has annular flanges 86 providing oil channels therebetween. The flanges 86 engage the shell or outer part 87 having an oil inlet 88 and one of the outer flanges 86 may have clean out plug 89 through which sediment may be removed., The inner flanges are spaced apart to accommodate an oil ring 90 and are notched at their lower edges to inter-communicate the oil channels.

In Figure 16 the bushing 91 has a smooth exterior surface with lthe ring slot as in its upper side as in Figure 15 and through which operates a chain or ring 92. The shell 93 has inwardly projecting spaced flanges 94 seating against the bushing 91 and providing oil channels thereabout.

It 1s apparent that the shells of all of the forms of the invention may be in the form of hubs, frames, or other like stationary portions of machines or the like wherein the bushings may be seated, and Figure 13 shows the shell 72 broken away and is sug` gestive of the indeterminate thickness in the part referred to as the shell.

In all forms of the invention the bushings may be made of bronze, cast iron or the like, with a cored hole therethrough for the shaft, the outside grooves or oil chambers may be cast either in the bushing or in the shell as may also be the ring space or chamber. The shell and the oil ring may he made from tubing in most forms of the in` vention so that the cost of manufacture and use of the bearing is reduced to a. minimum and is but slightly higher than the cost of a plain bushing. As the exterior or outer side of the bushing is concentric with the bore the improved bushing may be applied as easily as is the application ot'4 the ordinary plain bushing. i i

tltwill be obvious that many changes in thedeonstruction, combination and arrangementloi parts could be made, which could be used without departing from the spirit of my invention, and I do not mean to limit the invention to such details, except as particularly pointed out in the claims.

Having thus described my invention, what I claim and desire to secure by Letters Patent of the United States is:-

Y l. A self-lubricating bearing comprising a pairy ot' bushing sections having spaced annular partitions on their outer surface providing oil spaces between the partitions, a. Shell iitting over the partitions to close the oil spaces, said bushing sections having abutting portions at their inner ends for spacing the inner partitions apart and providing a ring space therebetween, said sections of the bushing being cut away at the top and at the ring space to open the top of the ring space to the interior of the bushing.A

a pair of downwardly diverging grooves formed in the inner walls of the bushing sections and leading from said ring space, and a ring mounted in the ring space for contact with a shaft mounted in the bushing for turning the ring and elevating oil from the bottom of the bearing.

2. A self-lubricating bearing comprising a pair of abutting bushing sections provided with annularipartitions spaced apart to provide anintermediate ring space and opposite end oil chambers, a shell seated upon the partitions and closing said ring space and oil chambers, said bushing sections being cut away at their meeting ends and at their upper sides to intercommunicate the ring space with the interior of thebushing, oil grooves formed in the inner face of the bushing sections and leading from said ring space, and a ring mounted in the ring space for contact with the upper side of a shaft mounted in said bushing to raise oil to the shaft and for distribution into said oil grooves.

3. In a self-lubricating bearing, the combination with a shaft of a bushing mounted on said shaft and composed ot two parts, provided with diverging grooves in the interior thereof, a shell surrounding the bushing, partitions carried by the bushing and located between the bushing and the shell, means for holding the shell and bushing against relative longitudinal movement, the two parts ot' said bushing having a ring space intenmediate between their ends, said space communicating with the divergiug grooves in the interior of the bushing, said bushing having oil chambers between the partitions, said partitions having openings therethrough connecting the oil chambers and ring space, and a ring loosely mounted in said ring space and normally resting on the shattfor elevating oil from the bottom of the bearing to said shaft.

KARIN o. NiLsson 

